%0 Journal Article
%T Effects of Photosynthetic Bacteria on Photosynthesis and Antioxidative Isoenzymes in Cucumber (Cucumis sativus)<br>光合菌对黄瓜光合及抗氧化同工酶的影响
%A 宋兴舜
%A 任静
%A 哈尔滨
%A 刘雪梅
%A 马双
%A 杨传平
%A 哈尔滨
%J 植物学报
%D 2009
%I 
%X We examined the net photosynthetic rate (Pn), the maximal photochemical efficiency of PSII (Fv/Fm) and the activities of antioxidant isoenzymes in cucumber (Cucumis sativus) w ith or without photosynthetic bacteria (PSB) application. PSB spraying resulted in a significant increase in fresh weight and leaf area for both genotypes of cucumber plants, accompanied by a marked increase of Pn. However, Fv/Fm showed negligible changes. Exogenous PSB also increased activities of total superoxide dismutase (SOD) and ascorbate peroxidase (APX) , and a general increase of their isoenzymes. The increased level in Cu/Zn-SOD, Fe-SOD and stroma APX (sAPX) was most significant in chloroplasts. These results implied that PSB played a favorable role in growth and photosynthesis and improved hardiness in cucumber by enhancing antioxidant enzyme activities.
%K <br>黄瓜
%K 同工酶
%K 光合作用
%K 光合菌
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=97AE3D0EBF25E42C466FEF50E492F710&aid=96BBA69D970194AD98D87AAA6CCC58FD&yid=DE12191FBD62783C&vid=1AE5323881A5ECDC&iid=94C357A881DFC066&sid=D5970ECA7D10A7B1&eid=2EAE52BA5B1222A9&journal_id=1674-3466&journal_name=植物学报&referenced_num=0&reference_num=17